Electron Paramagnetic Resonance of d Transition Metal Compounds

Electron Paramagnetic Resonance of d Transition Metal Compounds PDF

Author: F.E. Mabbs

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 1347

ISBN-13: 1483291499

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Electron paramagnetic resonance (epr) spectroscopy is a sensitive and versatile method of studying paramagnets, which is finding increasing use in chemistry, biochemistry, earth and materials sciences. The technique is treated both qualitatively and quantitatively, with a progressive increase in sophistication in each succeeding chapter. Following a general introductory chapter, the first half of the book deals with single unpaired electron systems and considers both metal and ligand Zeeman, hyperfine and quadrupole interactions. The simulation of these spectra is discussed, followed by the relationship between spin-Hamiltonian parameters and models of the electronic structures of paramagnets. The second half of the book treats multiple unpaired electron systems using the same philosophy. An introduction to the epr properties of cluster compounds and of extended exchanging systems is also given. There is a chapter on linewidths and lineshapes, and an extensive appendix containing much additional information. A wide-ranging library of simulated and experimental spectra is given, as well as graphical data which should aid spectrum interpretation. Each chapter contains key references and there is a substantial subject and keyword index. This book is designed to teach epr spectroscopy to students without any previous knowledge of the technique. However, it will also be extremely useful to researchers dealing with paramagnetic d transition metals.

Calculation of NMR and EPR Parameters

Calculation of NMR and EPR Parameters PDF

Author: Martin Kaupp

Publisher: John Wiley & Sons

Published: 2006-03-06

Total Pages: 621

ISBN-13: 3527604960

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This is the first book to present the necessary quantum chemical methods for both resonance types in one handy volume, emphasizing the crucial interrelation between NMR and EPR parameters from a computational and theoretical point of view. Here, readers are given a broad overview of all the pertinent topics, such as basic theory, methodic considerations, benchmark results and applications for both spectroscopy methods in such fields as biochemistry, bioinorganic chemistry as well as with different substance classes, including fullerenes, zeolites and transition metal compounds. The chapters have been written by leading experts in a given area, but with a wider audience in mind. The result is the standard reference on the topic, serving as a guide to the best computational methods for any given problem, and is thus an indispensable tool for scientists using quantum chemical calculations of NMR and EPR parameters. A must-have for all chemists, physicists, biologists and materials scientists who wish to augment their research by quantum chemical calculations of magnetic resonance data, but who are not necessarily specialists in these methods or their applications. Furthermore, specialists in one of the subdomains of this wide field will be grateful to find here an overview of what lies beyond their own area of focus.

Transition Ion Electron Paramagnetic Resonance

Transition Ion Electron Paramagnetic Resonance PDF

Author: J. R. Pilbrow

Publisher: Oxford University Press, USA

Published: 1990

Total Pages: 746

ISBN-13:

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This introductory text on transition ion electron paramagnetic resonance is intended for beginning graduate students in physics and chemistry. The phenomenon studied is an important tool for the identification and characterization of transition and metal ions. The author presents a new perspective that unifies the main features of field-swept EPR of anisotropic systems, and accounts for the origin of asymmetric line shapes, linewidth anisotropy, and strain broadening. A large number of spectra are shown, since familiarity with the shape of typical spectra is essential for the proper employment of this technique. A wide range of examples are also provided, including transition ions in crystals, glasses, semiconductors, phase transitions, proteins and other biological systems. In addition to its value as a text, this work is suitable for scientists in a variety of disciplines, as well as for anyone whose work involves the use of transition ion EPR techniques.

Transition Metal and Rare Earth Compounds

Transition Metal and Rare Earth Compounds PDF

Author: Hartmut Yersin

Publisher: Springer

Published: 2003-07-01

Total Pages: 201

ISBN-13: 3540444742

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There exists a large literature on the spectroscopic properties of copper(II) com- 9 pounds. This is due to the simplicity of the d electron configuration, the wide variety of stereochemistries that copper(II) compounds can adopt, and the f- xional geometric behavior that they sometimes exhibit [1]. The electronic and geometric properties of a molecule are inexorably linked and this is especially true with six-coordinate copper(II) compounds which are subject to a Jahn-T- ler effect.However,the spectral-structural correlations that are sometimes d- wn must often be viewed with caution as the information contained in a typical solution UV-Vis absorption spectrum of a copper(II) compound is limited. Meaningful spectral-structural correlations can be obtained in a related series of compounds where detailed spectroscopic data is available. In the fol- 4– lowing sections two such series are examined; the six-coordinate CuF and 6 2+ Cu(H O) ions doped as impurities in single crystal hosts.Using low tempera- 2 6 ture polarized optical spectroscopy and electron paramagnetic resonance, a very detailed picture can be drawn about the geometry of these ions in both their ground and excited electronic states. We then compare the spectrosco- cally determined structural data with that obtained from X-ray diffraction or EXAFS measurements.

Spin Crossover in Transition Metal Compounds II

Spin Crossover in Transition Metal Compounds II PDF

Author: Philipp Gütlich

Publisher: Springer Science & Business Media

Published: 2004-07-23

Total Pages: 316

ISBN-13: 9783540403968

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Table of contents C.N.R. Rao, M.M. Seikh, C. Narayana: Spin-State Transition in LaCoO3 and Related Materials .- H.A. Goodwin: Spin Crossover in Cobalt(II) Systems .- Y. Garcia, P.G tlich: Thermal Spin Crossover in Mn(II), Mn(III) Cr(II) and Co(III) Coordination Compounds .- D.N. Hendrickson, C.G. Pierpont: Valence Tautomeric Transition Metal Complexes .- P. Guionneau, M. Marchivie, G.Bravic, J.-F. Letard, D. Chasseau: Structural Aspects of Spin Crossover. Example of the [Fe(II)Ln(NCS)2] Complexes .- J. Kusz, P. G tlich, H. Spiering: Structural Investigations of Tetrazole Complexes of Iron(II) .- A. Hauser: Light-Induced Spin Crossover and the High-Spin Low-Spin Relaxation .- F. Varret, K. Boukheddaden, E. Codjovi, C. Enachescu, J. Linar s: On the Competition Between Relaxation and Photoexcitations in Spin Crossover Solids under Continuous Irradiation .- P. G tlich: Nuclear Decay Induced Excited Spin State Trapping (NIESST) .- M.-L. Boillot, J. Zarembowitch, A. Sour: Ligand-Driven Light-Induced Spin Change (LD-LISC): A Promising Photomagnetic Effect

Electron Paramagnetic Resonance

Electron Paramagnetic Resonance PDF

Author: Bruce C. Gilbert

Publisher: Royal Society of Chemistry

Published: 2002

Total Pages: 389

ISBN-13: 0854043152

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Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.

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